Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de instrucciones descargar pdf

Type OS2

Instruction Manual

NTAOS20007

May 2014

D103683X012

RELEASE RELAY

INTRODUCTION

The Type OS2 Release Relay consists of a Mechanism Box

(BM) and one or two Safety Manometric Boxes (BMS). Its

function is to provoke the activation of a slam shut valve

which may be stand alone (Type OSE), integrated in a

regulator (Types MP, MPS, DRPNPIL, EZH, DRPN and

EZR) or integrated in a Type K1000/K3000, in the case

of under or over pressure in the controlled gas network. It

may be mounted on systems of DN 25 to DN 150 and up to

PN 100.

It is tight shut and submersible. It may be connected to an

explosion-proof contact (intrinsically safe).

CONTENTS

Release Relay (Type OS2) .......................................... 1 to 3

Introduction .................................................................. 1

Mechanism Box ........................................................... 1

Safety Manometric Box ............................................... 1

Labelling ...................................................................... 2

Types of Installation ..................................................... 2

Characteristics ............................................................. 3

Dimensions and Weights ............................................. 3

Mechanism Box (BM) .................................................. 3 to 6

Description and Spare Parts ........................................ 3

Operations ................................................................... 4

Connections ................................................................. 4

Materials ...................................................................... 4

Commissioning ............................................................ 4

Maintenance ................................................................ 5

Options ........................................................................ 5

Safety Manometric Box (BMS) .................................... 6 to 12

Description and Spare Parts ........................................ 7

Operation ..................................................................... 7

Connections ................................................................. 7

Spring Adjustment Range ............................................ 8

Materials ...................................................................... 10

Adjustment ................................................................... 10

Maintenance ................................................................ 12

MECHANISM BOX (BM)

The mechanism box is designed to close a slam shut valve.

The operation is ensured in two successive stages: a

detection stage and a power stage. The separation between

the detection stage and the power stage provides maximum

precision, indifferent of working pressure, slam shut valve

diameter and gas flow. After activation of the slam shut valve

due to over or under pressure, the mechanism box must

be reset manually. The complete system is available, on

request only, sealed with lead and wire.

SAFETY MANOMETRIC BOX (BMS)

The pressure data is transformed into a displacement by

a safety manometric box (Type BMS 1) mounted on the

mechanism box (BM). This displacement is used to

activate the detection stage of the mechanism box in

the case of overpressure, over or underpressure, or

underpressure condition.

In certain configurations, a second box may be used

(Type BMS 2).

Figure 1. Type OS2

1 2 3 4 5 6 ... 11 12

RELEASE RELAY 1
Type OS2 10

Indice de contenidos

Pagina 1 - RELEASE RELAY

Type OS2Instruction ManualNTAOS20007May 2014D103683X012RELEASE RELAYINTRODUCTIONThe Type OS2 Release Relay consists of a Mechanism Box (BM) and one or

Pagina 2

Type OS210Table 19. Choice of BMS and SpringsTable 20. BMS MaterialPSD Diaphragm Bellows Piston0 to 2020 to 72 (*)72 to 100AG 2.5AG 5Max. onlyMin. onl

Pagina 3

Type OS211Releasing by Max. and Min. (Diaphragms or Bellows Only)• Adjusting the releasing screw Free the min. hook (key 2). Then in the following c

Pagina 4

Type OS2The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. France

Pagina 5

Type OS22TYPES OF INSTALLATIONFigure 2. Max. Pressure TriggeringFigure 3. Min. Pressure TriggeringFigure 4. Max. and Min. Pressure TriggeringSIZE 162

Pagina 6

Type OS23795321864ABCDESCRIPTION AND SPARE PARTS (BM)CONNECTIONSFigure 9. DimensionsTable 3. Mechanism Box AssemblyTable 2. Dimensions and WeightsTabl

Pagina 7

Type OS24DESCRIPTION AND SPARE PARTS (BM)COMMISSIONING (BM)Commissioning differs depending on whether the assembly has an internal or external bypass

Pagina 8

Type OS25TRAVEL STOPTable 7. Packing Gland MaterialBody Bronze - - - -Control rod Stainless steel Chromium platingTruarc ring Nitrile (NBR) - - - -CAU

Pagina 9

Type OS26Table 9. Mechanism Box (BM) VersionsVersion Installation Sealing Connection Mechanical ConnectionElectrical connectionsCommon NF NO Connectio

Pagina 10 - Type OS2

Type OS27DESCRIPTION (BMS)• Impulse line The impulse line (IS) is connected to the network to be protected (normally downstream of the regulator).•

Pagina 11

Type OS28Table 14. Max. Only Spring Adjustment RangesSPRING ADJUSTMENTS RANGES (BMS)(See definitions on page 9)MAX. ONLYBMS SPRING MAX. ONLYINTERVALS

Pagina 12

Type OS29Table 16. Max. and Min. Spring Adjustment RangesMAX. AND MIN.BMS SPRING MAX. and MIN.INTERVALS ∆1 and ∆2Type SizePMS box (bar)ø Wire (mm)Cod